Science & Technology

Stable Isotope Mixing Models Publications

Links to publications that describe three stable isotope mixing models developed by EPA, and the application of mixing models to environmental problems.

RFR 18003A - EPA Response

EPA's response to RFR 18003A

RFC: Summary Guidelines for Carcinogen

summarizes all documents

M. Jones Response to R. Holden Letter 2021-3-1 RFR Chloroprene

Design and Implementation of New Tools for Quality Assurance in Modeling

This guidance is designed to improve quality assurance project plans (QAPPs) for model applications, especially in the Total Maximum Daily Load (TMDL) program.

Chinook Salmon Thermal Tolerance Investigation

EPA funded an investigation of Chinook salmon temperature tolerance to contribute to available knowledge about the effects of temperature on physiological performance of California Chinook salmon.

2020 Chinook Salmon Interpopulation Thermal Tolerance Investigation

This study uses physiological performance testing to explore whether Chinook salmon populations near the species’ southernmost distribution (i.e., California’s Central Valley) may have a higher thermal tolerance than more northerly populations.

EPA Office of Research and Development Strategic Plans

This strategic plan supports the goals in EPA’s 2018-2022 strategic plan: A Cleaner, Healthier Environment; More Effective Partnerships; Greater Certainty, Compliance, and Effectiveness.

Final Ecosystem Goods and Services (FEGS)

This site provides an overview of FEGS and the tools developed to support it.

EPA Research in New Jersey

EPA researchers are working hard to protect communities across the nation. Learn about some of the work EPA researchers are doing in New Jersey.

EPA Research in Wisconsin

EPA researchers are working hard to protect communities across the nation. Learn about some of the work EPA researchers are doing in Wisconsin.

Site Characterization and Monitoring Technical Support Center (SCMTSC)

The Site Characterization and Monitoring Technical Support Center (SCMTSC) provides technical assistance to regional programs on complex hazardous waste site characterization issues.

Ecological Risk Assessment Support Center (ERASC)

ERASC is EPA’s technical support and resource center responsible for providing specialized scientific info and expertise on topics relevant to ecological risk assessment at hazardous waste sites.

EPA's Technical Support Centers

List of ORD's Technical Support Centers, which offer scientific and engineering expertise to contaminated site decision makers within EPA, including remedial project managers and on-scene coordinators. Regional Offices network with the states and tribes.